code: def timestamp_to_datetime(timeStamp, localized=True):
      """Converts a UTC timestamp to a datetime.datetime."""
      ret = datetime.datetime.utcfromtimestamp(timeStamp)
      if localized:
          ret = localize(ret, pytz.utc)
      return ret
  
file_path: pyalgotrade/pyalgotrade/utils/dt.py
imports: import datetime
  import pytz
label_desc: Use image node_id 6 for calling a global function with example usage: timestamp_to_datetime(timeStamp, localized) and returns: ret